Considering performance, Samsung's Board of Directors might want to fire him and replace him with Steve Jobs... Looking at the results, Steve does a much better job based on the financials of the two firms:
Samsung Electronics
Revenue US$ 143.125 billion (2010)[3]
Net income US$ 15.425 billion (2010)[4]
Profit US$ 12.683 billion (2010)
Total assets US$ 101.64 billion (2009)
Market Cap. US$119.7 billion
Apple Inc.
Revenue US$ 65.23 billion (FY 2010)[2]
Net income US$ 18.39 billion (FY 2010)[2]
Profit US$ 14.013 billion (FY 2010)[2]
Total assets US$ 75.18 billion (FY 2010)[2]
Market Cap. US$307 billion
Maybe, as you said, if he was only having to market a handful of products, he’d could have afford to have a narrow focus like Jobs does. Instead, he’s busy running a company with 275k employees compared to one that has less than 50k.